Use packages dart_parser, dart_scanner, and compiler_util.

pkg/compiler/lib/src/util/characters.dart

Index: pkg/compiler/lib/src/util/characters.dart
diff --git a/pkg/compiler/lib/src/util/characters.dart b/pkg/compiler/lib/src/util/characters.dart
deleted file mode 100644
index 60fe4e16ef8810c850517c1e19c6f0c0de1469ac..0000000000000000000000000000000000000000
--- a/pkg/compiler/lib/src/util/characters.dart
+++ /dev/null
@@ -1,143 +0,0 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-library characters;
-
-const int $EOF = 0;
-const int $STX = 2;
-const int $BS = 8;
-const int $TAB = 9;
-const int $LF = 10;
-const int $VTAB = 11;
-const int $FF = 12;
-const int $CR = 13;
-const int $SPACE = 32;
-const int $BANG = 33;
-const int $DQ = 34;
-const int $HASH = 35;
-const int $$ = 36;
-const int $PERCENT = 37;
-const int $AMPERSAND = 38;
-const int $SQ = 39;
-const int $OPEN_PAREN = 40;
-const int $CLOSE_PAREN = 41;
-const int $STAR = 42;
-const int $PLUS = 43;
-const int $COMMA = 44;
-const int $MINUS = 45;
-const int $PERIOD = 46;
-const int $SLASH = 47;
-const int $0 = 48;
-const int $1 = 49;
-const int $2 = 50;
-const int $3 = 51;
-const int $4 = 52;
-const int $5 = 53;
-const int $6 = 54;
-const int $7 = 55;
-const int $8 = 56;
-const int $9 = 57;
-const int $COLON = 58;
-const int $SEMICOLON = 59;
-const int $LT = 60;
-const int $EQ = 61;
-const int $GT = 62;
-const int $QUESTION = 63;
-const int $AT = 64;
-const int $A = 65;
-const int $B = 66;
-const int $C = 67;
-const int $D = 68;
-const int $E = 69;
-const int $F = 70;
-const int $G = 71;
-const int $H = 72;
-const int $I = 73;
-const int $J = 74;
-const int $K = 75;
-const int $L = 76;
-const int $M = 77;
-const int $N = 78;
-const int $O = 79;
-const int $P = 80;
-const int $Q = 81;
-const int $R = 82;
-const int $S = 83;
-const int $T = 84;
-const int $U = 85;
-const int $V = 86;
-const int $W = 87;
-const int $X = 88;
-const int $Y = 89;
-const int $Z = 90;
-const int $OPEN_SQUARE_BRACKET = 91;
-const int $BACKSLASH = 92;
-const int $CLOSE_SQUARE_BRACKET = 93;
-const int $CARET = 94;
-const int $_ = 95;
-const int $BACKPING = 96;
-const int $a = 97;
-const int $b = 98;
-const int $c = 99;
-const int $d = 100;
-const int $e = 101;
-const int $f = 102;
-const int $g = 103;
-const int $h = 104;
-const int $i = 105;
-const int $j = 106;
-const int $k = 107;
-const int $l = 108;
-const int $m = 109;
-const int $n = 110;
-const int $o = 111;
-const int $p = 112;
-const int $q = 113;
-const int $r = 114;
-const int $s = 115;
-const int $t = 116;
-const int $u = 117;
-const int $v = 118;
-const int $w = 119;
-const int $x = 120;
-const int $y = 121;
-const int $z = 122;
-const int $OPEN_CURLY_BRACKET = 123;
-const int $BAR = 124;
-const int $CLOSE_CURLY_BRACKET = 125;
-const int $TILDE = 126;
-const int $DEL = 127;
-const int $NBSP = 160;
-const int $LS = 0x2028;
-const int $PS = 0x2029;
-
-const int $FIRST_SURROGATE = 0xd800;
-const int $LAST_SURROGATE = 0xdfff;
-const int $LAST_CODE_POINT = 0x10ffff;
-
-bool isHexDigit(int characterCode) {
-  if (characterCode <= $9) return $0 <= characterCode;
-  characterCode |= $a ^ $A;
-  return ($a <= characterCode && characterCode <= $f);
-}
-
-int hexDigitValue(int hexDigit) {
-  assert(isHexDigit(hexDigit));
-  // hexDigit is one of '0'..'9', 'A'..'F' and 'a'..'f'.
-  if (hexDigit <= $9) return hexDigit - $0;
-  return (hexDigit | ($a ^ $A)) - ($a - 10);
-}
-
-bool isUnicodeScalarValue(int value) {
-  return value < $FIRST_SURROGATE ||
-      (value > $LAST_SURROGATE && value <= $LAST_CODE_POINT);
-}
-
-bool isUtf16LeadSurrogate(int value) {
-  return value >= 0xd800 && value <= 0xdbff;
-}
-
-bool isUtf16TrailSurrogate(int value) {
-  return value >= 0xdc00 && value <= 0xdfff;
-}